Accupro 588476 ER20 Collet 4 Mm

Product Description

The ACCUPRO 588476 is an ER20 series collet designed to hold 4 mm shank tooling in ER20-compatible tool holders and chucks. Collets of this type are used in CNC machining centers, manual milling machines, and drilling equipment where precise tool grip and concentricity are required. The ER20 collet standard is one of the most widely adopted in the industry, and this 4 mm collet is a direct-fit component for any spindle or chuck built to that specification. It weighs 0.5 pounds. Installation is performed by machinists and toolroom technicians.

This collet is suited for use in light to medium machining applications where a 4 mm tool shank must be held securely in an ER20 chuck. Typical applications include CNC routing, engraving, drilling, and end mill operations in production and job-shop environments. It is a single-piece collet packaged individually.

Key Features

• ER20 collet series — fits any ER20-standard chuck or collet block
• 4 mm collet bore for precise clamping of 4 mm shank tools
• Rated to 1000 units of clamping pressure per specification data
• Single-piece construction for direct tool-holder installation
• Packaged individually — quantity of 1

Compatibility

Designed as a direct-fit replacement or spare for ER20-standard collet chucks and tool holders accepting 4 mm shank tooling. No specific machine model compatibility was provided in the product data.

Installation Notes

ER20 collets are installed and removed by machinists using the appropriate ER20 collet nut and spanner wrench. Always de-energize and lock out the spindle before changing tooling. Ensure the collet, nut, and chuck bore are clean and free of chips or debris before seating the collet. Do not exceed the tool holder manufacturer's recommended torque range for the collet nut.